Icon PLC
ICLR- Exchange
- Nasdaq
- Industry
- Services-Commercial Physical & Biological Research
- SEC CIK
- 0001060955
In the last 90 days, Icon PLC insiders filed 0 open-market purchases and 8 sales; 426 institutions reported holding it in 13F filings for Q2 2026, worth $13.9B in total; superinvestors Harris Associates (Oakmark) and Greenhaven Associates hold it.
Holders of 5% or more of ICLR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Icon PLC, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 13G/A | 10.90%8.36M shares | +1.90 ppfrom 9.00% | May 15, 20253 filings | Mar 6, 2026 | SEC |
| FMR LLC | 13G/A | 8.50%6.59M shares | +1.60 ppfrom 6.90% | May 6, 20263 filings | Nov 5, 2026 | SEC |
| Wellington Management Group LLP | 13G/A | 7.70%5.91M shares | +1.70 ppfrom 6.00% | Feb 3, 20215 filings | May 15, 2026 | SEC |
| Invesco Ltd. | 13G/A | 6.90%5.26M shares | +1.80 ppfrom 5.10% | May 6, 20262 filings | Aug 13, 2026 | SEC |
| Harris Associates L PSuperinvestorHarris Associates (Oakmark) | 13G | 5.70%4.35M shares | New | May 15, 20261 filing | May 15, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
27 Schedule 13D and 13G filings on Icon PLC, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 5, 20261:19 PM ET | FMR LLCand 1 other | 13G/A | 8.50%6.59M shares | +1.60 ppfrom 6.90% | Sep 30, 2026 | SEC |
| Aug 13, 20262:40 PM ET | Invesco Ltd. | 13G/A | 6.90%5.26M shares | +1.80 ppfrom 5.10% | Jun 30, 2026 | SEC |
| Aug 6, 202610:28 AM ET | FMR LLCand 1 other | 13G/A | 6.90%5.27M shares | +1.40 ppfrom 5.50% | Jun 30, 2026 | SEC |
| May 15, 20264:11 PM ET | Harris Associates L Pand 1 otherSuperinvestorHarris Associates (Oakmark) | 13G | 5.70%4.35M shares | New | Mar 31, 2026 | SEC |
| May 15, 20261:12 PM ET | Orbis Investment Management Ltdand 1 other | 13G/A | 0.00%0 shares | −5.50 ppfrom 5.50%Below 5% | Mar 31, 2026 | SEC |
| May 15, 20267:24 AM ET | Wellington Management Group LLPand 3 others | 13G/A | 7.70%5.91M shares | +1.70 ppfrom 6.00% | Mar 31, 2026 | SEC |
| May 6, 20264:04 PM ET | Invesco Ltd. | 13G | 5.10%3.88M shares | New | Mar 31, 2026 | SEC |
| May 6, 202611:23 AM ET | FMR LLCand 1 other | 13G | 5.50%4.17M shares | New | Mar 31, 2026 | SEC |
| Mar 6, 20262:00 PM ET | Artisan Partners Limited Partnershipand 4 others | 13G/A | 10.90%8.36M shares | +1.90 ppfrom 9.00% | Feb 27, 2026 | SEC |
| Feb 17, 202612:08 PM ET | Orbis Investment Management Ltdand 1 other | 13G/A | 5.50%4.21M shares | +0.20 ppfrom 5.30% | Dec 31, 2025 | SEC |
| Nov 14, 202512:59 PM ET | Orbis Investment Management Ltdand 1 other | 13G | 5.30%4.13M shares | New | Sep 30, 2025 | SEC |
| Nov 12, 20259:33 AM ET | Wellington Management Group LLPand 2 others | 13G | 6.00%4.64M shares | – | Sep 30, 2025 | SEC |
| Aug 12, 20256:03 AM ET | Artisan Partners Limited Partnershipand 4 others | 13G/A | 9.00%7.18M shares | +3.70 ppfrom 5.30% | Jun 30, 2025 | SEC |
| Jul 3, 20257:57 AM ET | WCM Investment Management, LLC | 13G/A | 0.25%199.9K shares | –Below 5% | Jun 30, 2025 | SEC |
| May 15, 20257:12 AM ET | Artisan Partners Limited Partnershipand 3 others | 13G | 5.30%4.29M shares | New | Mar 31, 2025 | SEC |
| Nov 12, 2024 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Jan 30, 2024 | WCM Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | WCM Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2023 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Feb 6, 2023 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | WCM Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 2, 2022 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| May 7, 2021 | Massachusetts Financial Services Co | 13GOld format | – | New | – | SEC |
| Feb 10, 2021 | WCM Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 3, 2021 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
87 notices from officers, directors and other affiliates planning to sell Icon PLC shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 202611:53 AM ETAmended | Ciaran MurrayDirector | 10.0K | $2.00M | Nov 12, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 2, 20264:11 PM ET | Nigel ClerkinOfficer | 1.49K | $307.5K | Nov 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 2, 20264:10 PM ET | Ciaran MurrayDirector | 3.45K | $710.0K | Nov 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 2, 20264:06 PM ET | Barry Edward BalfeOfficer | 5.17K | $1.07M | Nov 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Sep 17, 20264:08 PM ET | Eugene Pacelli McCagueDirector | 3.25K | $569.6K | Sep 17, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Sep 17, 20264:06 PM ET | Ronan Martin MurphyDirector | 5.00K | $875.9K | Sep 17, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Sep 16, 20264:10 PM ET | John ClimaxDirector | 5.00K | $875.9K | Sep 16, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:12 PM ET | Anne WhitakerDirector | 841 | $138.2K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:10 PM ET | Linda Sue GraisDirector | 841 | $138.2K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:09 PM ET | Eugene Pacelli McCagueDirector | 841 | $138.2K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:06 PM ET | John ClimaxDirector | 841 | $138.2K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:04 PM ET | Ronan Martin MurphyDirector | 841 | $138.2K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:02 PM ET | Julie Ann O'NeillDirector | 915 | $150.3K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20265:00 PM ET | Nigel ClerkinOfficer | 2.27K | $372.5K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20264:58 PM ET | Ciaran MurrayDirector | 2.68K | $439.8K | Aug 11, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 10, 20264:02 PM ET | Barry Edward BalfeOfficer | 382 | $62.7K | Aug 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 9, 20265:14 PM ET | Barry Edward BalfeOfficer | 2.86K | $300.9K | Mar 9, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 4, 20264:07 PM ET | Barry Edward BalfeOfficer | 566 | $61.8K | Mar 4, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 3, 20254:23 PM ET | Nigel ClerkinOfficer | 1.47K | $249.3K | Nov 3, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Oct 2, 20254:03 PM ET | Stephen CutlerOfficer | 18.9K | $3.59M | Oct 2, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 8, 20254:33 PM ET | Barry Edward BalfeOfficer | 381 | $60.0K | Aug 8, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 8, 20254:27 PM ET | Thomas Noel O'LearyOfficer | 1.14K | $178.9K | Aug 8, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 23, 20254:38 PM ET | Ronan Martin MurphyOfficer | 334 | $42.4K | May 23, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 23, 20254:35 PM ET | Eugene Pacelli McCagueOfficer | 334 | $42.4K | May 23, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 23, 20254:32 PM ET | Linda Sue GraisOfficer | 334 | $42.4K | May 23, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the ICLR notices from the last 12 months